Never heard of that! I know guitar folk generally tend to know of woods kther woodworkers don’t and vice verse but even from knife making I’ve not seen that. What’s it behave like properties wide? It almost looks like patterned leather. I imagine it’s perfectly smooth but my brain is telling me it’s full of dimples like you’ve been at it with a ball pein hammer! I can’t gauge the scale of the pic, is this piece big enough for a body or is it a neck/fretboard idea?